How many dots at the intersections are black?

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In this scintillating grid illusion, dark dots seem to appear and disappear randomly. Various theories have been proposed to explain it. It may be caused by the mechanism of lateral inhibition (the capacity of an excited neuron to reduce the activity of its neighbors).
Steve Lamberty
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Very interesting!
reach: rather globalillusionsoptical illusionstechnology

Answers by country

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answers
flagRepublic of Ireland
7%
0%
3%
88%
26
flagSwitzerland
0%
7%
4%
87%
41
flagAustralia
3%
1%
8%
86%
80
flagPoland
1%
3%
7%
85%
19652
flagGreece
0%
0%
7%
85%
27
flagGermany
2%
3%
6%
84%
387
flagSingapore
0%
0%
12%
83%
31
flagCanada
4%
4%
4%
80%
73
flagthe United States
2%
4%
9%
79%
886
flagthe United Kingdom
1%
2%
10%
78%
277
flagAustria
4%
8%
8%
77%
75
flagKazakhstan
4%
4%
6%
75%
49
flagUkraine
3%
5%
11%
72%
311
flagMalaysia
0%
13%
9%
72%
22
flagBelarus
6%
11%
3%
69%
63
flagthe Philippines
5%
5%
2%
67%
40
flagIndia
5%
7%
14%
66%
348
flagRussia
3%
5%
12%
66%
329
flagthe Netherlands
6%
3%
13%
66%
30
flagthe United Arab Emirates
0%
3%
18%
55%
27